CN106536343B

CN106536343B - adjustable kayak chair

Info

Publication number: CN106536343B
Application number: CN201580039027.4A
Authority: CN
Inventors: 格雷戈里·斯科特·克特曼; 詹姆斯·泰勒·曹莫斯基; 贾森·克里斯托弗·卡尔达什; 菲利普·詹姆斯·道; 威廉·德鲁·布拉克特
Original assignee: Hobie Cat Co
Current assignee: Hobie Cat Co
Priority date: 2014-07-24
Filing date: 2015-07-15
Publication date: 2018-12-28
Anticipated expiration: 2035-07-15
Also published as: CN106536343A; AU2017203269B2; AU2015294428B2; ES2703676T3; AU2015294428A8; CA2954805C; WO2016014314A1; AU2015294428A1; BR112017000850A2; AU2017203269A1; EP3172127A4; EP3172127B1; US9527555B2; US20160023726A1; EP3172127A1; CA2954805A1

Abstract

The present invention discloses a marine vessel having a seat securely mounted on the vessel, the seat comprising a plastic seat frame and a plastic seat back frame. The seat frame and seat back frame are joined via a hinged connection. The bottom of the seat frame has a receptacle that easily engages with an engagement element mounted on the deck of the vessel. The seat has a mechanism for easily adjusting the height of the front portion of the seat, the height of the rear portion of the seat, the angle of inclination, and the amount of lumbar support. The seat has four legs that are stored below the seat frame and can be inserted into the seat frame to convert the seat into a lawn chair.

Description

Adjustable kayak chair

Background technique

Become known for the various seats arrangement on kayak and other dinghies.For example, the of Sai Erjin (Selkin) The of No. 4,768,454 United States Patent (USP)s and the Huolou Thelma Hopkins & prestige Co., Ltd (Hopkins&Holloway Limited) 2 401 539 A UK Patent Application case of GB is disclosed for the portable seat of ship.The 2013/th of road (Dow) et al. 0239873 A1 Patent Application Publication and skin drawing-die tool Co., Ltd (Pyranha Mouldings Limited) 2 331 235 A UK Patent Application case of GB be disclosed for the backrest in ship adjustment arrangement.It is expected that seat was both It is comfortable to be fastened to ship again.The present invention provides novel chair, and the novelty chair is suitable for being fastened firmly to ship while can also It is adjusted in many ways to be suitble to a variety of preferences.

Summary of the invention

In simple terms, in an aspect, the present invention includes a kind of ship comprising:

Upper face,

Seat is carried on securely on the surface,

Vertical tooth rack spaced apart is fastened to the vertical surface of the ship beside the seat,

Elongated member, longitudinal dimension relative to the ship are laterally extended and are had between the rack gear and be connected to The pinion gear of the elongated member, the rack gear receive the pinion gear, described thin for the front of the seat to be attached to The component of long component, and

Component for being locked in the pinion gear in any upright position on the rack gear,

The front of the seat described whereby can be increased by changing the position of the pinion gear on the rack gear and It reduces.

The component for locking includes: the spring in the elongated member, and the spring is connected to pin；Vertically Plate, it is described with each rack alignment and wherein with the hole for receiving a series of positioned verticals at the end of the pin Spring biases the pin across the hole of the pinion gear and the positioned vertical,

Component for overcoming the spring biasing includes manually operable element, whereby when the manually operable element When being operated, it is described to change that the pin is drawn back from the vertical panel and the pinion gear is advanced freely above and below the rack gear The height of the front of seat, and when the manually operable element is released, the pin rodent closes one of described hole And by the seat lock due in appropriate location.

In another aspect, the present invention includes a kind of ship, and the ship has chair, and the chair has to be held securely The seat being loaded on the ship；

The chair has frame and including seat frame,

Back frame, the seat back frame are engaged with the back frame via hinged connection,

There is the frame of both the seat and the backrest material extended across the frame to be propped up with providing Seating area and back rest supports area are supportted,

The bottom side front of the frame has there are two holder,

It is fastened with two engaged elements spaced apart for receiving the holder on the upper face of the ship, and nibbles It closes element and makes the holder can be only when the rear portion of the seat surrounds the engaged element upwards and rotates forward through moulding It is inserted into the engaged element and is removed from the engaged element, the engaged element is downward in the seat with the holder And it is locked together when back rotation.

A kind of ship comprising:

Deck surface,

Cabin,

Seat is fastened to the cabin,

Support component is pivotally attached to the bottom rear of the seat and has distal end,

Spring, in the reception position for being used to for the support component being immobilizated in the under-seat,

For the component of the support component to be pivotally unfolded,

The cabin is recessed with multiple positioned verticals on the general vertical surface at the rear portion of the neighbouring seat Mouthful, to receive the distal end of the support component in support component expansion and support the seat at multiple heights The rear portion.

In additional aspect, the present invention includes a kind of ship, and the ship includes:

Seat is carried on securely on the ship, and the seat has seat frame and is pivotally connected to The backrest frame of the seat frame,

The backrest frame is supported on the either side of the backrest frame by rope part,

For making the rope part tensioning to be pulled along the backrest frame on the backrest frame Component, the backrest frame have the locking component to lock the tensioning member,

The backrest frame has the manually operable component for being coupled to discharge the locking component, such as thick stick Bar.

In another additional aspect, the present invention includes a kind of ship, and the ship includes:

Seat is carried on securely on the ship, and the seat has seat frame and backrest frame, described Backrest frame has the fabric for crossing over backrest frame extension to provide back rest supports,

Non-rigid bar is attached on every side of the fabric,

The backrest frame includes rigid crossing on each side,

The backrest frame have to by the bar into the channel the wanted depth of drawing-off to increased or decrease Across the component of the tension in the fabric of the backrest frame.

The invention also includes a kind of ship, the ship includes:

Seat is carried on securely on the ship, and the seat has frame,

Four tapered holes, close to the bottom side at the turning of the frame,

Four supporting legs, respectively have upper end and lower end, and the upper end is suitable for removably receiving and consolidating It is held in the tapered hole,

Tensioning rope passes through each supporting leg, and one of each end of the rope attaches at the bottom side of the frame, The other end attaches at the lower side of the supporting leg,

Holding members, it is associated with each supporting leg the supporting leg to be immobilizated in the reception position below the frame In,

When the holding members are released, the tensioning rope towards the tapered hole pull the supporting leg it is described on Portion end, to allow the upper end of the supporting leg to be anchored in the tapered hole, and described by the way that tensile force to be applied to Tensioning rope and allow the supporting leg to draw back manually from the hole and allow the supporting leg back to the reception position.

More particularly, some features in feature of the invention, engaged element (usually key-like engaged element) are turned to It is attached to elongated member (generally managing), the upper face of the elongated member across ship is laterally extended.The engaged element It is freely rotated on the tube, but the engaged element is constrained by the rack gear of every one end of the pipe to keep vertical.Small tooth Wheel is in every one end of the pipe, and the pinion gear engages the tooth on the rack gear.The rack gear constrains the pipe and gear To be scrolled up and down on the inside of the rack gear.

The advantages of this feature is that the pipe is restrained to keep horizontal.If load to be applied to one end of the pipe, that It forms torque in the tube and the gear drives the pipe holding horizontal.In addition, occupant is usually on the seat backward It pushes and the gear scrolls up and down on the rack gear, this reduces friction.Spring loaded pin is on the inside of the left end of the pipe. Stainless steel plate with seven holes is on the inside of the rack gear on left side.The pin is pushed to one of described hole by the spring In.When the pin rodent is together in the hole in the stainless steel plate, the pin prevent the pipe move up or down or from Rotation, and the pipe is immobilizated at selected height by the gear.

The rear portion of the seat frame has support component (it serves as a type of bracket), and the support component is with pivot The mode of turning is installed to the seat frame.Spring generates torque on the support component, and the torque lifts the support member It part and is removed from reception position.Small rope on left side will cause the support component to be rotated downwardly to expansion (deployed) In position.There are two supporting legs for the support component tool.These supporting legs can be for top seat position of sound production in the deck of ship Recess on or the supporting leg can be placed in the recess on the floor of ship for middle position.For lower position, seat frame Frame is placed on the floor of ship.

Rope yarn support on the either side of back bracket frame ship.The length of the rope yarn may be adjusted to adjustment seat and lean on The obliquity of back frame frame.Rope yarn on left side enters backrest frame, and pulley makes rope yarn rotate 90 °, so that rope yarn passes through It is directed to center.Rope yarn on right side enters backrest frame, and pulley makes rope yarn towards 90 ° of center rotating.On left side Pulley makes rope yarn toward 180 ° of back rotation to center.Two rope yarns are then to linear gear.The linear gear has engagement tug 29 teeth of six teeth on sub (catch).There are two angled slots for the pawl tool, so that working as the pawl to the left When mobile, two pins drive the pawl to be pressed onto linear gear and the tooth engagement.The pawl will make the linear gear It is held in the position.Spring exerts a force to pawl, and the power will be such that the pawl holding engages with the linear gear. To be detached from pawl, there are manually operable component (such as lever), the manual operations on the right side of backrest frame Formula component will pull pawl to the right and be detached from pawl from linear gear.Damping rope exerts a force to linear gear, described Power pulls linear gear to the right and forms tension in rope yarn.This tension will be pulled along backrest.From operator's The pressure at back will push backrest and make damping tubing sections.Seat frame and back frame are preferably by light material system At, such as plastics.

Adjustable Lordosis support.The tension in the fabric supported by backrest frame can be adjusted in lower back portion area. Stainless steel is attached to every side of the fabric of backrest frame.The channel every side Shang You of backrest frame, it is described not Rust steel pole is placed in the channel.At the height of lower back portion, rope yarn is wound around stainless steel and the tension in rope yarn will be Stainless steel is drawn in channel, this will increase the tension in fabric.Tensioner is installed to backrest frame, the Xiao Zhang Tight device can increase the tension in rope yarn and therefore increase the tension in fabric.

There are four tapered holes for seat bottom frame tool.Being accommodated in together with damping cable loop is four supporting legs.Work as supporting leg When being released, supporting leg is drawn in tapered hole by the second damping rope.Supporting leg has the tapered portion of the tapered portion to mating hole. Four supporting legs allow seat to be used as lawn chair on the ground.

Seat of the invention meets leisure and the needs for the kayak fan that fishes in significant aspect.Seat is by frame structure At the frame is pivotally connected to backrest frame.Seat material is fixed to these frames to allow the weight of user Comfortable distribution on the seat.This seat material is designed to that air is allowed to pass through and cannot be filled with water, this helps to protect user It holds dry and nice and cool.There is also be integrated into seat material to increase air-flow and reduce the three-dimensional netted object of pressure spot.

There are four adjustment for seat tool: the tilt angle of backrest frame, the height of the front of Lordosis support, seat and The height at the rear portion of seat.Top position be allowed for fishing or go sightseeing naturally and towards the preferable sight of the water surface.Lower position mentions Compared with centre of gravity and therefore for providing more multistability in canoe.The front of seat assembly is attached to ship via the key on ship Oceangoing ship, the key engage the holder on the bottom of seat frame design, and the design allows seat assembly remaining fixed to ship It is rotated when oceangoing ship.This pivotal action allows to go up and down functional seat together with rear support element arrangement.This key and holder design also permit Perhaps very quickly attachment and removal of the seat to ship.Ship is left, seat can be used as multiple functional after installing supporting leg Chair.

In general the present invention is applicable to the ship of dinghy type.One of most typically of these ships is skin Ship.

Detailed description of the invention

Fig. 1 is the perspective view on the right side of the front upper portion of seat.

Fig. 1 a is mounted to the perspective view on the right side of the front upper portion of the seat in kayak.

Fig. 2 is the perspective view of the rear portion upper right of seat.

Fig. 3 a and 3b are the profile cross section figures for engaging the right button of the holder of bottom of seat frame.

Fig. 4 is the perspective view in the section section of kayak, shows aluminum pipe, key and rack gear.

Fig. 5 is the cross-sectional view of the Fig. 4 across aluminum pipe on the quarter watched.

Fig. 5 a is by the enlarged view of the right hand end of Fig. 5 of " B " instruction.

Fig. 6 is the cross-sectional view of the left-front corner of seat frame when looking up release lever (manually operable component).

Fig. 7 is the bottom view in the left side of seat frame, shows that rope yarn is unfolded in support component.

The cross-sectional view for the seat that Fig. 8 a, 8b and 8c are shown when watching to the left in kayak, show in lower position, in Between support component in position and high position.

Fig. 9 is the cross-sectional view of the spectral line of support seat back frame.

Figure 10 is the perspective view of the rear portion upper right of the recliner mechanism in the case where covering is removed.

Figure 10 a is when watching downwards across the cross-sectional view of recliner mechanism.

Figure 10 b and 10c show the cross section of the recliner in the case where pawl is in engagement and disengaging configuration Figure.

Figure 11 and 11a is the cross-sectional view of waist adjuster when watching downwards.

Figure 12 is the perspective view with the rear portion lower right side of the seat frame of supporting leg.

Figure 13 is the perspective view of the front upper right side of the seat in the case where supporting leg is through installing.

Specific embodiment

Schema is turned in more detail, and Fig. 1 and 2 shows plastic seat frame 1, plastic seat backrest 2, the plastic seat frame Frame is pivotally connected with the plastic seat backrest by bolt 3 and 4.Seat mesh 5 (waterproof material) is attached to seat Chair frame 1 is to form seating area 5a.Similarly, backrest mesh 6 (waterproof material) is attached to backrest frame 2 with shape At seating area 6a.

Fig. 1 a shows that the seat being installed in ship 30, the ship have deck 30c and cabin 30d.

Fig. 3 a and 3b show that the sectional view of seat frame 1, the seat frame have holder on the bottom on the right side of front 7.Fig. 1 shows the holder 7 and 8 at each of the bottom side of front corners of seat frame place.Holder 7 and 8 is through moulding to divide It Jie Na not engaged element 9 and 10.These elements are key-like and referred to herein as key in the embodiment shown.Key 9 has Have a flange 9a forward, the flange seat around key upwards and turn forward about 45 ° when engage holder 7, such as in Fig. 3 b It is middle to be shown.When chair is faced upward, key 9 is locked in the holder 7 of seat frame 1, as shown in fig. 3 a.Fig. 2 is shown It is attached to the rope 11 of seat frame 1 and is attached to the clip 12 at the end of rope 11.Clip 12 can be snapped onto fixed to hull 30 Eyelet column 13 on and then seat frame 1 can not lean forward to wherein key 9 and 10 can not from holder 7 and 8 be detached from point and chair It is fixed firmly to ship.

Fig. 4, which is shown, is installed to the key 9 and 10 of aluminum pipe 20, the aluminum pipe pinion rack 16 and 17 and prevents key from rotating.Small tooth Wheel 22 and 23 is installed to the tooth 20a on every one end and pinion rack 16 and 17 of aluminum pipe 20.

Key 9 and 10 has vertical member 9a and 10a, and the vertical member is for making seat be centered at ship.The key Also there is horizontal projections 10b and 10c, the side of the horizontal projections pinion rack 16 and 17 is to prevent the key on pipe 20 Rotation.

Fig. 5 and 5a shows the cross-sectional view of the ship across pipe 20.Pin 25 is pushed to seven holes in plate 26 by spring 24 In one of 25a, seat is locked in wanted height by this.Fig. 6, which is shown, is looking up release lever (such as the hand of handle 27 Move operated component) when cross-sectional view, the component contacts at 27a and 21a with collar 21.When being pulled along release lever When 27, collar 21 compresses spring 24 and draws back pin 25 from plate 26, and aluminum pipe 20, key 9 and 10 and pinion gear 22 and 23 are certainly It is moved up and down by ground.

Fig. 7 shows the bottom view of seat frame 1, and wherein support component 40 is pivotally attached.Support component 40 can be It bracket and is so referred in the description of this embodiment.Torque is applied to bracket 40 by spring 41, this cause bracket 40 face upward and It keeps retracting close to seat frame 1.42 end of rope yarn is connected in bracket 40 and winds in the over top of bracket 40.The phase of rope yarn 42 To the other end system of damping rope 43 and damping rope 43 to rope yarn 44,44 end of rope yarn is connected in handle 45 for opposite end system.It draws forward Fixed handle 45 will generate tension in rope yarn 42, this causes bracket 40 to dip down or be unfolded.

Fig. 8 a shows sectional view of the seat frame 1 in hull 30, and wherein bracket 40 is contained and seat is in lowest order In setting.Fig. 8 b shows the bracket 40 in the recess 30a in hull 30 for middle position.Fig. 8 c shows the recess for being in hull 30 It is the bracket 40 of high position in 30b.

Fig. 9 shows that rope yarn 50 and 51 is covered with polyester cover 67 and 77 so that the rope yarn seems more solid and more soft It is soft.Polyester cover 67 and 77 is fastened to backrest frame 2 with fixture 69 and 79 by casing (ferule) 68 and 78.

Figure 10 shows the section section of backrest frame 2, and wherein the covering of Slope angle adjustment part 64 has been removed.It is logical The length adjustment obliquity for changing rope yarn 50 and 51 is crossed, the rope yarn is 2a and 2b at into backrest frame 2 and then It is by pulley 52 and 53 towards about 90 degree of center rotating of backrest frame 2.Rope yarn 50 is by the rotation of pulley 54 about 180 Degree.Both rope yarns 50 and 51 then terminate to linear gear 55.Rope yarn 50 and 51 is 1000lbs breaking strength spectral line.1/4 " subtracts Shake rope 56 is connected to linear gear 55, and the damping rope rotates about 180 degree by pulley 57 and the damping rope is in 2c Place is fixed to backrest frame 2.Damping rope 56 drawing force is applied to linear gear 55 and be therefore applied to rope yarn 50 and 51.If pawl 58 is detached from, this tension will make backrest frame 2 forward.Pawl 58 is installed such that shifting to the left It is dynamic that pawl 58 will be caused to engage linear gear 55.Spring 59 exerts a force to pawl 58 so that pawl 58 moves to the left.

Figure 10 a shows the cross section of the backrest frame 2 seen down into above pawl 58 and linear gear 55 just Figure.Backrest frame 2 is attached to by the idler wheel 65 and 66 that pin 65a and 66a are carried respectively.Skewed slot 58a and 58b in pawl 58 In idler wheel 65 and 66 to constrain pawl 58 mobile and be detached from from linear gear 55.

Figure 10 b shows that cable 60 is looped through the end of pawl 58.The opposite end of cable 60 is looped through release lever 63, wherein Pawl 58 is engaged with linear gear 55.Figure 10 c shows the release lever 63 through rotating, and tension is generated in cable 60 and makes pawl 58 move to the right and are detached from pawl 58 from linear gear 55.Spring 61, which applies tension to cable 60 and formed, makes release lever 63 are held in the power in retracted position.64 covering mechanism of covering and improvement aesthetic feeling.

Figure 11 is shown across the backrest frame 2 of waist adjuster and the sectional view of backrest mesh 6.Stretcher One end of rope yarn 71 enters stretcher 70 and the opposite end of the rope yarn is attached to annular ring (donut) 72.Waist adjuster rope Line 73 passes through annular ring 72.One end of waist adjuster rope yarn 73, by backrest frame 2, surrounds 1/8 " stainless steel at 2d The formation of silk thread 74 turns through 180 degree and returns at 2d across backrest frame 2.The other end of waist adjuster rope yarn 73 surrounds The formation of pulley 76 turns through 180 degree, and by backrest frame 2 at 2e, surrounding 1/8, " formation of stainless steel silk thread 75 turns through 180 degree And it is returned at 2e across backrest frame 2.The each of waist adjuster rope yarn 73 terminates in backrest frame 2 It is tied at the heart and waist adjuster rope yarn 73 forms single circle.Increase waist adjuster rope yarn when passing through turnbuckle 70 When tension in 73,1/8 " stainless steel silk thread 74 and 75 be pulled down deeper into backrest frame 2 channel 2f and 2g, this increases the tension in backrest mesh 6, increases lumbar support whereby.

Figure 12 shows the bottom of seat frame 1, and supporting leg 80 is through installing on the right side of middle front part, and rear right supporting leg 81 is through pacifying Dress, rear left supporting leg 82 is contained and front left supporting leg 83 is contained.The bottom side of seat frame 1 has for receiving four 4 tapered hole 1a, 1b, 1c and 1d of a supporting leg 80,81,82 and 83, this allows seat to be used as lawn chair.Each supporting leg, which has, to be subtracted Shake rope 84,85,86 and 87, the damping rope by each supporting leg 80,81,82 and 83 and tapered hole 1a, 1b, 1c and 1d, wherein the end of damping rope is anchored at the upper side of seat frame.Supporting leg is tightly inserted into tapered hole.Damping rope The other end be attached to the front of supporting leg, this is held in supporting leg in installation site and reception position.Damping cable loop 88, 89,90 and 91 supporting leg is anchored in reception position.Figure 13 shows all four supporting legs 80,81,82 and 83 through installing.

Claims

1. A ship comprising:

deck surface,

cabin,

a seat, which is fastened to the cabin,

a support member pivotally attached to the bottom rear portion of the seat and having a distal end,

a spring for retaining the support element in a stowed position under the seat,

means for pivotally deploying said support element,

The cabin has a plurality of vertically disposed notches on a generally vertical surface adjacent the rear portion of the seat to receive the distal end of the support element when the support element is deployed and at multiple positions. The rear portion of the seat is supported at a height.

2. The vessel of claim 1, wherein said support members comprise spaced apart members each having a distal end, and said hold has spaced apart vertically displaceable recesses to support said rear of said seat department.

3. The vessel of claim 1, further comprising:

said seat having a frame comprising a seat frame rigidly carried on said vessel,

spaced engagement elements firmly carried by the surface of the vessel, the engagement elements having forward facing flanges,

The seat has equidistantly spaced receptacles on the underside of the seat frame, the receptacles being shaped to receive the seat only when the seat is rotated upward and forward about the engagement element. said engaging elements, and

The engagement element has a vertical protrusion that centers the seat on the watercraft.

4. The vessel of claim 1, further comprising:

a chair having a seat frame and a back frame joined via a hinged connection to the back frame,

the frame of both the seat and the backrest has material extending across the frame to provide a supported seating area and a backrest support area,

The bottom front of the frame has two receptacles,

Fastened to the upper surface of the vessel are two spaced engagement elements for receiving the receptacle, and the engagement elements are shaped so that the receptacle surrounds the engagement element only at the rear of the recliner. An element is inserted into and removed from the engagement element when rotated upward and forward, and the engagement element and receptacle lock together when the recliner is rotated downward and rearward.

5. The watercraft of claim 4, wherein an attachment member connects the rear of the seat to the watercraft to prevent the seat from tipping forward and the receptacle from disengaging from the engagement element.

6. The vessel of claim 1, further comprising:

said seat is securely received in said cabin, said seat comprising a seat frame and a seat back frame, said seat back frame being pivotally connected to said seat frame,

spaced apart vertical racks fastened to the vertical surface of the cabin alongside the seat,

an elongated member carried on the seat frame extending transversely with respect to the longitudinal dimension of the vessel between the racks and having a pinion fixed to the elongated member, the rack receiving the said pinion,

means for attaching the front portion of the seat to the elongated member,

means for locking said pinion in any vertical position on said rack,

whereby the front of the seat can be raised and lowered about the pivot by changing the position of the pinion on the rack,

wherein spaced engagement elements are secured to the elongate member, the engagement elements each having a forward facing flange,

The seat has equidistantly spaced receptacles on the underside of the seat that are shaped to receive the seat only when the seat is rotated upward and forward about the engagement element. engaging elements, and

The engagement element has a vertical protrusion extending vertically upward which centers the seat on the watercraft.

7. The vessel of claim 1, further comprising:

said seat, which is securely received in said cabin, said seat comprising a seat frame and a seat back frame, said seat back frame being pivotally connected to said seat frame,

means for attaching the front portion of the seat to the elongated member, and

means for locking the pinion in any vertical position on the rack,

Thereby the front portion of the seat can be raised and lowered about the pivot by changing the position of the pinion on the rack.

8. The vessel of claim 1, further comprising:

said seat, which is solidly carried on said vessel, said seat having a frame,

four tapered holes, which are close to the underside of the corners of the frame,

four legs each having an upper end and a lower end adapted to be removably received and retained in the tapered bore,

a tensioning cord passing through each leg, one end of said cord being attached at the bottom side of said frame and the other end being attached at said lower side of said leg,

a retaining member associated with each leg to retain the leg in a stowed position below the frame,

When the retaining member is released, the tensioning cord pulls the upper end of the leg towards the tapered hole, thereby allowing the upper end of the leg to be secured to the tapered hole and allowing the leg to be manually withdrawn from the tapered bore and return the leg to the stowed position by applying tension to the tensioning cord.

9. The vessel of claim 1, further comprising:

the seat back frame supported on either side of the seat back frame by tether members connecting the seat back frame to the seat frame,

a transverse member connecting both sides of the seat back frame, carrying a tensioning member for tensioning the tether member to pull the seat back frame forward and for locking the tensioning member the locking member,

The seat back frame has a manually operable member coupled to release the locking member.

10. A vessel according to claim 9, wherein the tensioning member comprises a linear gear and a detent adapted to be locked and unlocked.

11. The vessel of claim 1, further comprising:

The seat, which is securely received in the cabin, includes a seat frame pivotally connected to a seat back frame, the seat back frame having a Supported fabric on both sides for backrest support,

non-rigid rods, which are attached to each side of the fabric,

the seat back frame includes a rigid channel on each side thereof, the seat back frame further includes a transverse member extending between the channels,

The seat back frame has a member received inside the cross member to draft the non-rigid rod a desired depth into the channel to increase or decrease the fabric across both sides of the seat back frame tension in.

12. The watercraft of any one of claims 1, 4, 6, 7, 8, 9 or 11, wherein the watercraft is a kayak.